Table 1 Birth year, follow-up years and participation in the Finnish and the Swedish cohort
Cohort, Study population | Birth year | Adolescence | Youth | Early adulthood | Midlife |
|---|---|---|---|---|---|
Finland N = 2269 | 1967 | 1983 / age 16 N = 2194 | 1989 / age 22 N = 1656 (75.5%) | 1999 / age 32 N = 1471 (67.0%) | 2009 / age 42 N = 1334 (60.8%) |
Sweden N = 1083 | 1965 | 1981 / age 16 N = 1080 | 1986 / age 21 N = 1060 (97.8%) | 1995 / age 30 N = 1046 (96.7%) | 2008 / age 43 N = 1010 (93.3%) |